Optical Local Area Network (lan) Patents (Class 398/58)
  • Patent number: 11405109
    Abstract: The present disclosure relates to information transmission methods, optical line terminations (OLTs), optical network units (ONUs), and communications systems. One example method on an OLT side includes allocating, by the OLT, an identifier to a first ONU through a first channel, performing, through the first channel, ranging on the first ONU to obtain ranging information about the first channel, and after determining, by the OLT and the ONU through negotiation, to use two channels to perform information transmission, performing, by the OLT, data transmission of a first service with the first ONU through a second channel.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: August 2, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lun Zhang, Gang Zheng
  • Patent number: 11375299
    Abstract: An OLT comprises a processor configured to: obtain optical powers associated with ONUs, and generate an instruction instructing a transmit order of transmissions based on the optical powers; a transmitter coupled to the processor and configured to transmit the instruction to the ONUs; and a receiver coupled to the processor and configured to receive the transmissions from the ONUs based on the instruction. An apparatus comprises a receiver configured to receive an instruction instructing a transmit order of transmissions based on optical powers associated with ONUs; a processor coupled to the receiver and configured to process the instruction; and a transmitter coupled to the processor and configured to transmit a transmission based on the instruction.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: June 28, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Huaiyu Zeng, Xiang Liu, Andy Shen, Ning Cheng, Yuanqiu Luo, Frank Effenberger
  • Patent number: 11373662
    Abstract: Audio system height channel up-mixing that is configured to develop two or more height channels from audio sources that do not include height-related encoding. The up-mixing involves determining correlations and normalized channel energies between input audio signals. At least two height channels (e.g., left and right height audio signals) are developed from the correlations and normalized energies.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: June 28, 2022
    Assignee: Bose Corporation
    Inventor: James Tracey
  • Patent number: 11356196
    Abstract: A method of communication using a forward error correction (FEC) code includes receiving, at an optical line terminal (OLT), performance capability information provided by an optical network unit (ONU), adjusting, at the OLT, a ratio between an FEC code size and a payload size based on the performance capability information, and informing the ONU of the FEC code size selected based on the ratio such that message exchanges between the ONU and the OLT are performed using the FEC code size to which the ratio is applied.
    Type: Grant
    Filed: March 2, 2019
    Date of Patent: June 7, 2022
    Assignee: ZTE Corporation
    Inventors: Jun Shan Wey, Junwen Zhang, Zheng Liu, Weiliang Zhang
  • Patent number: 11350192
    Abstract: A method for multi-rate data interaction in an optical network, a network device, and a non-transitory computer-readable storage medium are disclosed. The method may include: acquiring a rate capability supported by an ONU; and interacting service data via a channel corresponding to the rate according to the rate capability supported by the ONU.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: May 31, 2022
    Assignee: ZTE CORPORATION
    Inventors: Yanbin Qiu, Liyong Cai, Peng Wang
  • Patent number: 11329950
    Abstract: A WAN controller can configure a first WAN interface on a first WAN edge device to connect to a first transport network. The WAN controller can configure a second WAN interface on a second WAN edge device to connect to a second transport network. The WAN controller or the first WAN edge device, connected to a first access device of an access network, can determine the first WAN edge device has no Layer 2 connectivity to the second WAN edge device, connected to a second access device of the access network. The WAN controller or the first WAN edge device can establish a tunnel between the first WAN edge device and the second WAN interface. The WAN controller can route a specified class of WAN traffic received by the first WAN edge device from the access network through the tunnel.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: May 10, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ajay Kumar Mishra, Satyajit Das, Laxmikantha Reddy Ponnuru, Anubhav Gupta
  • Patent number: 11251897
    Abstract: Methods, systems, and optical power controllers are disclosed. Various problems caused by the use of a single L0 power controller in the prior art are addressed by using first and second L0 power controllers with the first L0 power controller managing first optical components with the optical network, and the second L0 power controller managing second optical components within the optical network.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 15, 2022
    Assignee: Infinera Corporation
    Inventors: Omer F. Yilmaz, Stephane St-Laurent, Steve Sanders, Matthew L. Mitchell
  • Patent number: 11239914
    Abstract: A light fixture includes a housing defining a peripheral wall around a reference axis and being provided with a base defining a light emission window. The light fixture further includes a photoreceiver mounted on the base and configured to receive a light beam from the remote terminal carrying a data signal, called the uplink signal, a lighting module arranged in the housing and configured to emit a light beam carrying a data signal, called the downlink signal, through the window and a module for processing data signals according to at least one communication protocol of the network. The light fixture includes a printed circuit board, called the processing board, extending transversely inside the housing and remote from the base, on which the processing module is mounted.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: February 1, 2022
    Assignee: LUCIBEL
    Inventors: Emilie Poulain, Loic Boinet
  • Patent number: 11218786
    Abstract: Disclosed are a spectrum allocation method and device for an optical network and a computer storage medium. The method comprises: segmenting a service path of an optical network to obtain at least one path segment; trying to allocate, in sequence, for each path segment of the service path a service processing manner that satisfies a service spectrum requirement; and when the service processing manner satisfies the service spectrum requirement, allocating a frequency used by each path segment on the service path according to the currently allocated service processing manner of each path segment of the service path.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: January 4, 2022
    Assignee: ZTE CORPORATION
    Inventor: Shuchao Xiao
  • Patent number: 11146335
    Abstract: A process for configuring an optical network termination (ONT) includes receiving an upstream overhead physical layer operation administration and maintenance (PLOAM) message from an optical line terminal (OLT). The process also includes extracting byte 10 data from the upstream overhead PLOAM message to identify a transceiver type of the OLT, and matching the transceiver type of the OLT with one of a plurality of sets of optical parameters. The process further includes storing the matched transceiver type of the OLT in a double date rate (DDR) memory prior to completing a ranging process with the OLT.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: October 12, 2021
    Inventors: Yanghong Zhong, Fan Xiong, Long Zhao, Binbin Peng, Jili Fu
  • Patent number: 11121777
    Abstract: Signal sending method and apparatus. The signal sending method includes: sending, by a first apparatus, an optical signal to a second apparatus in a slot before a first wavelength slot; sending, by the first apparatus, a first optical signal to the second apparatus in the first wavelength slot; and sending, by the first apparatus, an optical signal to a second apparatus in the slot after the first wavelength slot. A wavelength of the first optical signal is a first wavelength. The first optical signal sent by the first apparatus in one first wavelength slot is used to carry first wavelength data on one symbol. Wavelengths of the optical signals sent by the first apparatus in the slots before and after the first wavelength slot are wavelengths other than the first wavelength.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: September 14, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Guanghao Shao, Peng Dong
  • Patent number: 11101892
    Abstract: Signal sending method and apparatus. The signal sending method includes: sending, by a first apparatus, an optical signal to a second apparatus in a slot before a first wavelength slot; sending, by the first apparatus, a first optical signal to the second apparatus in the first wavelength slot; and sending, by the first apparatus, an optical signal to a second apparatus in the slot after the first wavelength slot. A wavelength of the first optical signal is a first wavelength. The first optical signal sent by the first apparatus in one first wavelength slot is used to carry first wavelength data on one symbol. Wavelengths of the optical signals sent by the first apparatus in the slots before and after the first wavelength slot are wavelengths other than the first wavelength.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: August 24, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Guanghao Shao, Peng Dong
  • Patent number: 11082312
    Abstract: Presented herein are service chaining techniques for selective traffic redirection based on Access Control List (ACL) configurations on switches. Network traffic forwarded along one or more service chains may be monitored on the basis of individual segments of the service chains. In one example, the network traffic forwarded along individual segments may be counted on a per-segment basis.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: August 3, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventor: Samar Sharma
  • Patent number: 11063783
    Abstract: A passive optical network communication method, including receiving an Ethernet packet carrying an optical network unit identifier, determining a correspondence between the optical network unit identifier and an optical network unit type according to the optical network unit identifier, determining that an optical network unit that receives the Ethernet packet is a first type of optical network unit, where the optical network unit type includes the first and second type of optical network unit, and a packet receiving rate of the first type is different from that of the second type, determining a correspondence between the optical network unit type and a channel according to the first type, determining a channel corresponding to the first type, encapsulating the Ethernet packet into a gigabit-capable passive optical network encapsulation method (GEM) frame, and sending the GEM frame to the first type of optical network unit using the determined channel.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: July 13, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Guikai Peng, Huafeng Lin, Shiwei Nie, Xuming Wu, Liming Fang, Yinghua Dong
  • Patent number: 11025364
    Abstract: A system to implement a communication line coding scheme using a non-complex bit-to-symbol mapping, a forward error correction (FEC) coding, and an additive bit scrambler after the FEC at the PHY layer is provided. The system may be a part of or implemented by an automobile component. The system may be a PHY device configured to convert data from the MAC layer into 2D-PAM3 symbols that are transmitted across a communication link at a predetermined transmission rate, such as to be compliant with a communication standard. The PHY device may select characteristics of the conversion, such as the FEC coded symbol, based on the target transmission rate. The PHY device may include a transceiver, and may convert the data from MAC layer to PHY layer and back.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: June 1, 2021
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Ba-Zhong Shen, Ahmad Chini, Chung Ming Tu, Mehmet Vakif Tazebay
  • Patent number: 10955635
    Abstract: A HFC network includes an optical node, a first fiber optic cable, and a second fiber optic cable. The first fiber optic cable has a first end that is connected to the optical node for delivering signals to the optical node. The second fiber optic cable has a first end that is positioned within the optical node. Optical fibers of the first optic cable are ribbonized and spliced to ribbonized optical fibers of the second fiber optic cable at a spliced connection such that signals can be transmitted between the fiber optic cables. An optical fiber of the first fiber optic cable is spliced to a connectorized fiber pigtail at a spliced connection, and the connectorized fiber pigtail is optically connected to a broadband optical transceiver in the optical node. The spliced connections are stored in a fiber splice tray within the optical node.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: March 23, 2021
    Assignee: ARRIS Enterprises LLC
    Inventors: Zoran Maricevic, John O. Caezza, Scott Kahoun, Scott T. Ishler, Kevin P. Orazietti, Zhijian Sun, Roy A. Harbert, Brian Solomon
  • Patent number: 10931373
    Abstract: A wireless communication link between a communication network and a communication terminal device positioned in a predeterminable region may be established and improve capacity for wireless communication. A line-bound communication link to the communication network may be established via a communication base device arranged in a fixed location, and an optically-based communication link to the communication terminal device may be established via an optical deflection device.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: February 23, 2021
    Assignee: Osram GmbH
    Inventors: Gerhard Maierbacher, Alexander Wanderer
  • Patent number: 10931516
    Abstract: Some examples relate to detecting network link failure. In an example, a determination may be made at a first network device on a network regarding an average round-trip delay time (RTD) between the first network device and a second network device over a given time interval during a given period of time. Then, for the given time interval, a keepalive packet may be sent from the first network device to the second network device at the average RTD of the given time interval for a keepalive time. In response to a determination, by the first network device that there is no acknowledgement of the keepalive packet from the second network device during the keepalive time, a network link between the first network device and the second network device may be identified as failed.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: February 23, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Srinivas Rao Killadi, Shravan Kumar Vuggrala
  • Patent number: 10930992
    Abstract: Aspects of the subject disclosure may include, a system for receiving electromagnetic waves that propagate along a transmission medium, generating, according to the electromagnetic waves, first signals and second signals, wirelessly providing, via a short-range dielectric antenna of the waveguide system, the first signals to a base station device, and wirelessly providing, via an array of dielectric antennas of the waveguide system, the second signals to a communication device remotely located from the waveguide system. Other embodiments are disclosed.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: February 23, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Farhad Barzegar, Paul Shala Henry, Giovanni Vannucci, Peter Wolniansky, Thomas M. Willis, III, Robert Bennett, Irwin Gerszberg, Donald J. Barnickel
  • Patent number: 10924055
    Abstract: A motor drive apparatus includes an AC stabilized power supply configured to convert AC voltage of a commercial AC power source into input power supply voltage according to a received voltage command value and output the input power supply voltage, a converter configured to convert the input power supply voltage into DC voltage and output the DC voltage to a DC link, an inverter configured to convert the DC voltage at the DC link into AC voltage for driving a motor, and an input power supply voltage control unit configured to control the input power supply voltage that is output by the AC stabilized power supply.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: February 16, 2021
    Assignee: FANUC CORPORATION
    Inventor: Wataru Kuroki
  • Patent number: 10911260
    Abstract: A link control circuit (10) includes a plurality of hardware processing units serving as an uplink parser unit (11) configured to output, as an event, the contents of link control notified by an uplink control frame, a timer unit (12) configured to start/stop a timer and output a link event in accordance with expiration of the timer, a frame generation unit (13) configured to generate a downlink control frame containing the contents of link control, and a state management unit (15) configured to manage the state of the link in accordance with these events, and instruct the timer unit to start/stop the timer and the frame generation unit to generate the downlink control frame in accordance with the state of the link, thereby controlling connection establishment, maintenance, and disconnection of the link.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: February 2, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Saki Hatta, Nobuyuki Tanaka, Satoshi Shigematsu
  • Patent number: 10871517
    Abstract: An integrated circuit comprising: a plurality of on-chip-instrument-modules; a test-controller-module configured to communicate data with the plurality of on-chip-instrument-modules; a functional-module configured to communicate data with the plurality of on-chip-instrument-modules; and an on-chip-instrument-controller. The on-chip-instrument controller is configured to: for each of the plurality of on-chip-instrument-modules, store an access-indicator; and based on a value of the access-indicator for each on-chip-instrument-module, enable the on-chip-instrument-module to communicate with either: the test-controller-module; or the functional-module.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: December 22, 2020
    Assignee: NXP B.V.
    Inventors: Johannes Petrus Wilhelmus van Beers, Henricus Hubertus van den Berg, Richard Morren, Joannes Theodorus van der Heiden, Evert-Jan Pol
  • Patent number: 10855397
    Abstract: A downstream data frame transmitting method includes: generating, by an optical line terminal (OLT), a downstream data frame, where the downstream data frame includes a frame header and a payload, the frame header includes a physical synchronization sequence (Psync) field, and the Psync field is used to identify the downstream data frame, where when a value of the Psync field is a first value, the Psync field is further used to indicate that payload data is protected by forward error correction (FEC); or when a value of the Psync field is a second value, the Psync field is further used to indicate that payload data is not protected by FEC; and sending, by the OLT, the downstream data frame. Embodiments of the present invention can reduce a bit error rate of a FEC indication status and improve reliability of the FEC indication status.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 1, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bo Gao, Shiwei Nie, Lei Jing, Zhenping Wang
  • Patent number: 10805818
    Abstract: Uplink leveling systems and methods for a distribution antenna are provided. An uplink leveling system includes at least one communication path between a base station point of interface and a remote antenna unit. A broadband measurement detector is communicatively coupled to measure signal power in the at least one communication path at the base station point of interface. A signal measurement receiver is communicatively coupled to measure signal power in the at least one communication path. A test signal generator is configured to generate a test signal in the at least one communication path in an uplink. At least one controller is configured to level the communication path in the uplink direction based at least in part on measurements by the broadband measurement detector and the signal measurement receiver in response to the generated test signal by the test signal generator.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: October 13, 2020
    Assignee: Andrew Wireless Systems GmbH
    Inventors: Alfred Lupper, Johannes Kroupa, Alfons Dussmann, Bogdan Mazilu
  • Patent number: 10784926
    Abstract: There is provided a configuration that can prevent malfunction in bus communication even when a radio signal transmitted from a transmitter of an apparatus is received with a receiver of the same apparatus. A logic circuit outputs logic 1 to a transmitter in a case where logic 0 is input from a receiver to the logic circuit and a low-level logic signal is input from a processor to the logic circuit. The logic circuit outputs the low-level logic signal to the processor in a case where the logic 1 is input from the receiver and a radio signal received with the receiver is a radio signal transmitted from a communication counterpart. The logic circuit outputs a high-level logic signal to the processor in a case where the logic 1 is input from the receiver and a radio signal received with the receiver is a radio signal transmitted from the transmitter.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: September 22, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroto Tamaki
  • Patent number: 10742317
    Abstract: A test instrument can be coupled to a test point in a passive optical network to measure optical signals transmitted between an optical line terminal and an optical network unit in the optical network. The test instrument can capture an identifier of the ONU from downstream signals sent from the OLT to the ONU.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: August 11, 2020
    Assignee: VIAVI SOLUTIONS DEUTSCHLAND GMBH
    Inventor: Dominik Prause
  • Patent number: 10736035
    Abstract: A communications device establishes a communications context for communicating data packets using a packet communications bearer from the communications device via mobile communications network in a connected state and releases communications context when in an idle state. A controller is configured in combination with a receiver to receive signalling information providing an indication of one or more functions performed by at least one of the receiver, a transmitter, or the controller which can be changed in a power saving state, and when in either the idle state or the connected state, to enter the power saving state in which the one or more of the operations performed by at least one of the receiver, the transmitter, or the controller are changed in accordance with the indication of the changed functions received in the signalling information from the mobile communications network.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: August 4, 2020
    Assignee: SONY CORPORATION
    Inventors: Brian Alexander Martin, Hideji Wakabayashi, Jussi Kahtava, Yuichi Morioka
  • Patent number: 10735130
    Abstract: In one embodiment, a first group of splitters receives a group of signals from a group of transmitters. Each splitter in the first group of splitters splits a signal into a plurality of signals that are sent to a plurality of multiplexers. A multiplexer in the plurality of multiplexers receives one of the plurality of signals from each splitter in the group of splitters and multiplexes the received one of the plurality of signals into a multiplexed signal. The multiplexer sends the multiplexed signal through a single connection in which upstream signals are sent to a group of nodes and downstream signals are received from the group of nodes. A de-multiplexer de-multiplexes the multiplexed signal into the group of signals and sends the group of signals to the group of nodes via a second group of splitters that are connected to the group of nodes.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: August 4, 2020
    Assignee: ARRIS Enterprises LLC
    Inventors: Zoran Maricevic, Kevin P. Orazietti, Hui Fang, John O. Caezza
  • Patent number: 10735126
    Abstract: A reconfigurable optical add/drop multiplexer (ROADM) complex in an optical network may include one or more core ROADM devices, each including multiple input/output port pairs configured for respective wavelengths or wavelength bands to be coupled to a fiber distribution panel (FDP) over fiber. The FDP may include multiple FDP connectors to receive optical signals from the core ROADM device(s) and may extract and route optical signals having a single wavelength to respective transponder connectors of the FDP for coupling to a transponder. Multiple expansion options may be enabled at the FDP. For example, according to one option, a single expansion connector may be enabled for coupling to an expansion device to provide additional drop port capacity. In another example, multiple expansion connectors may be enabled for coupling to respective expansion devices.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: August 4, 2020
    Assignee: Fujitsu Limited
    Inventor: Eric Koopferstock
  • Patent number: 10728826
    Abstract: In 5G proposals, functionality of the BBU is disaggregated into a DU and a CU that handle BBU functionality according to different functional splits. A significant amount of cloud infrastructure is envisioned to be needed to implement several of the designated splits. An integrated device (e.g., white box) can integrate the functionality of multiple RRU (or NR in 5G) and the functionality of multiple BBU (or DU/CU splits in 5G). By performing a lightweight routing determination at the integrated device, requisite cloud infrastructure can be significantly reduced.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: July 28, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Monica Pennington, Anju Bhagat
  • Patent number: 10694269
    Abstract: Systems and methods are provided for determining whether an optical cable matches a port on a switch device. The present disclosure can provide for a switch device which includes a cable identification tool. The cable identification tool can be configured to receive a port configuration table from a management device. The switch device can then obtain features of at least one cable attached to a port of the switch device. The switch device can then compare the obtained features with a table entry in the port configuration table to yield a comparison result. The table entry can correspond to the port to which the at least one cable is attached. Based on the comparison result, the switch device can generate one or more notifications. The notifications can indicate a match status of the at least one cable to the port.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 23, 2020
    Assignee: QUANTA COMPUTER INC.
    Inventors: Chao-Lan Huang, Tsu-Tai Kung, Hou-Lung Lin
  • Patent number: 10686735
    Abstract: Some embodiments provide a method for a deparser of a processing pipeline. The method receives, from a set of match-action stages of the pipeline, packet header field (PHF) values for a first set of PHFs of a packet processed by the match-action stages. The method also receives, directly from a parser of the pipeline, (i) packet data for the packet prior to any modification by the match-action stages and (ii) descriptive data that specifies locations within the packet data for a second set of PHFs of the packet that are not included in the first set of PHFs. The method constructs a packet from (i) the PHF values received for the first set of PHFs and (ii) the packet data received for the second set of PHFs. The descriptive data is used to extract packet header field values for the second set of PHFs from the packet data.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: June 16, 2020
    Assignee: Barefoot Networks, Inc.
    Inventors: Gregory C. Watson, Srivathsa Dhruvanarayan, Glen Raymond Gibb, Constantine Calamvokis, Aled Justin Edwards
  • Patent number: 10644800
    Abstract: A method of virtually bonding together at least two physical channels in an optical network terminal (ONT) of a passive optical network (PON) can include receiving, via the ONT, a plurality of frames from a network device, classifying, using a processor of the ONT, the plurality of frames into one of a plurality of services, assigning the service to the at least two physical channels of the ONT, wherein each of the at least two physical channels is associated with a respective laser of the ONT to transmit at a respective wavelength, and transmitting, toward an optical line terminal, the plurality of frames of the service using at least one of the at least two physical channels during an assigned time slot.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 5, 2020
    Assignee: Calix, Inc.
    Inventor: Christopher Thomas Bernard
  • Patent number: 10608740
    Abstract: Disclosed are a visible light communication method and apparatus. It is one object of the present disclosure to provide an apparatus for generating data including a visible light communication device management protocol header to allow only a specific terminal to receive data transmitted by a lighting device using visible light communication, and a method therefor.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: March 31, 2020
    Assignee: YUYANG DNU CO., LTD.
    Inventors: Sangok Kim, Byungoh Kim, Sang-ho Yoon, Seung-wan Roh, Seok-joo Koh, Sang Il Choi
  • Patent number: 10587937
    Abstract: A method is provided to establish a path in an optical domain to couple first and second IP routing domains for use by a VPN. A network controller (NC) receives an optical path setup command and, in response, determines an optical path ID identifying an optical path. The NC sends a mapping command to a domain controller (DC) associated with the first IP routing domain and receives routing information that includes a VPN label. The NC sends a forwarding command including the routing information to a DC associated with the second IP routing domain, the forwarding command configured to cause a termination point in the second IP routing domain to forward a packet to the optical path when the packet comprises elements of the routing information.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: March 10, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Young Lee, Italo Busi
  • Patent number: 10554576
    Abstract: Embodiments provide a method for transmitting a service stream in a flexible Ethernet and an apparatus. The method includes: obtaining a to-be-transmitted service stream, where the service stream is to be transmitted by using a target virtual connection supported by a physical connection group between a transmit end and a receive end, the physical connection group includes multiple physical connections and supports at least one virtual connection, and the target virtual connection is any one of the at least one virtual connection; determining, from total bandwidth resources of the multiple physical connections and according to timeslot configuration tables used by the multiple physical connections, a timeslot bandwidth resource that belongs to the target virtual connection; and transmitting the service stream to the receive end by using the timeslot bandwidth resource that belongs to the target virtual connection.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: February 4, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Qiwen Zhong, Qiuyou Wu
  • Patent number: 10540887
    Abstract: Methods, systems, and products bridge wireless data transmissions with power-line communications. Should a failure occur in alternating current power, a backup battery maintains the power-line communications. Direct current battery power is used to power a wireless transceiver, thus maintaining both wireless data transmissions and communication during power failures.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: January 21, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: John Alson Hicks, III, Brett Davis, Glenn Howell, Robin Thomas, James A. Worsham, Randy S. Zimler
  • Patent number: 10505657
    Abstract: Information on allocation of a bandwidth of uplink communication of each user device is extracted from information notified by an upper-level device on the uplink communication of the user devices. Identification information of a lower-level device connected to a terminal device and identification information of the user devices are stored in correlation with each other. A bandwidth demanded for uplink communication of the terminal device is determined on the basis of the information on the allocation of the bandwidth of the uplink communication of each of the user devices and the identification information of the user devices. A start time point of the uplink communication of the terminal device and the amount of information of signals for which transmission of the uplink communication of the terminal device is allowed are allocated to the terminal device on the basis of the bandwidth demanded for the uplink communication of the terminal device.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: December 10, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hiroshi Ou, Tatsuya Shimada, Takayuki Kobayashi, Jun Terada
  • Patent number: 10491321
    Abstract: An optical demultiplexer has at least one unit circuit formed by three AMZs having a same arm length difference and cascaded in a tree structure in which two output ports of the 1st AMZ are connected to the 2nd AMZ and the 3rd AMZ, respectively, wherein the unit circuit has first and second monitors connected to the first and second output ports of the 2nd AMZ, and third and fourth monitors connected to the first and second output ports of the 3rd AMZ, a first control circuit controlling the transmissivity of the 1st AMZ so as to increase the monitoring result of the second and fourth monitors, a second control circuit controlling the transmissivity of the 2nd AMZ to decrease the monitoring result of the first monitor, and a third control circuit controlling the transmissivity of the 3rd AMZ to decrease the monitoring result of the third monitor.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: November 26, 2019
    Assignees: FUJITSU LIMITED, PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
    Inventor: Tomoyuki Akiyama
  • Patent number: 10484098
    Abstract: A method implemented at a transmitter in a passive optical network (PON), the method comprising the transmitter fragmenting a data packet into multiple frames, with each frame of the multiple frames including a data packet preamble, with the data packet preamble including an indicator associated with at least one lane to be used to transmit the data packet and a logical link identifier (LLID), the indicator identifying a first lane selected from a plurality of lanes, identifying at least one frame transmitted over the first lane, and identifying the lane order of the plurality of lanes, and the transmitter transmitting the multiple frames over the plurality of lanes.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: November 19, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Duane Remein, Frank Effenberger, Yuanqiu Luo
  • Patent number: 10454611
    Abstract: This spatial division multiplexing (SDM) in power-limited optical communication systems. In general, an SDM optical transmission system may be configured to increase data capacity over the data capacity of a non-SDM optical transmission system while maintaining power consumption at or below that of the existing non-SDM optical transmission system. To realize such an improvement in performance without increasing power consumption, an example SDM optical transmission may be constructed by reducing system bandwidth, reducing and/or altering equipment for filtering, reducing optical amplifier spacing, reducing operational amplifier power consumption, etc. In this manner, increased data transmission performance may be realized even where available power may be strictly limited.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 22, 2019
    Assignee: Subcom, LLC
    Inventors: Alexei Pilipetskii, Oleg V. Sinkin, Georg Mohs, Hussam G. Batshon, Neal S. Bergano
  • Patent number: 10439724
    Abstract: A passive optical network (PON) includes a first optical line terminal (OLT), a second OLT, and an optical network unit (ONU). The first OLT sends an equalization delay change message to the ONU, wherein the equalization delay change message includes an equalization delay, an upstream channel ID and a downstream channel ID corresponding to the equalization delay. The ONU receives the equalization delay change message. When the ONU tunes from the first OLT to the second OLT, the ONU obtains the equalization delay for upstream transmission according to the upstream channel ID and the downstream channel ID.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: October 8, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xuming Wu, Yuanqiu Luo, Dekun Liu, Jianhe Gao
  • Patent number: 10404580
    Abstract: A method of network level protection route evaluation and remediation in a network includes defining thresholds for one or more services, wherein the thresholds define how many expected alternate protection routes are available for the one or more services for network level restoration; periodically evaluating a number of available alternate protection routes for the one or more services; notifying a network operator responsive to the number of available alternate protection routes being below the thresholds; and performing one or more remedial actions in the network based on the notifying.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: September 3, 2019
    Assignee: Ciena Corporation
    Inventor: Brahm Kumar
  • Patent number: 10397055
    Abstract: Certain embodiments described herein are generally directed to determining efficient update schedules for logical networks based on a graph representing the priority of features supported by the network, and a graph representing the priority of logical entities within the logical network. By building a graph of the logical network using directed edges to represent the update priority of one logical entity over another, an ordering, or a set of possible orderings, may be obtained. A topological sort of the graph may obtain such an ordering. Alternative orderings may indicate opportunities for parallel updating, which may result in a more efficient process for updating the logical network.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: August 27, 2019
    Assignee: Nicira, Inc.
    Inventors: Aayush Saxena, Aravinda Kidambi Srinivasan
  • Patent number: 10374714
    Abstract: A method for online switching of an operation mode of an ONT comprises: receiving an OMCI message in an online state by the ONT, wherein the OMCI message carries an indication message for switching the operation mode; and switching the operation mode according to the indication message by the ONT. The above-mentioned method realizes changing of an operation mode of an ONT in real-time in an online state based on the GPON standard, so that the ONT can flexibly operate in a gateway mode or a network bridge mode, and an operator management system only needs to change the operation mode of the ONT through a standard OMCI message according to a local network requirement.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: August 6, 2019
    Assignee: ZTE CORPORATION
    Inventors: Yangchun Zhang, Feng He, Sikun Xue
  • Patent number: 10367681
    Abstract: An example of high availability for FC or FCoE can include maintaining connection state information in a Fiber Channel over Ethernet (FCoE) Data Forwarder (FDF) or Fiber Channel Data Forwarder (FcDF). A failure of a first FCoE Forwarder (FCF) associated with the FDF can be detected. A second FCF can check a configuration file of the second FCF to see if the second FCF is responsible for the FDF. The second FCF can request the virtual domain ID, of the failed FCF, from a principal switch. The second FCF can be used as a service node for the FDF.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 30, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventor: Siamack Ayandeh
  • Patent number: 10361938
    Abstract: A method for measuring transmission delay of an optical transport network (OTN) device and a source OTN device. The method comprises: a source OTN device receives a delay measurement request transmitted by a user, generates a delay request frame, and transmits the delay request frame to a destination OTN device; the source OTN device receives a response frame returned from the destination OTN device, the response frame including a first time information; after receiving the response frame returned from the destination OTN device, the source OTN device obtains the system time T4 at when the response frame is received by the source OTN device; the source OTN device parses the response frame to obtain the first time information, and calculates the transmission delay between the source OTN device and the destination OTN device according to T4 and the first time information.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: July 23, 2019
    Assignee: ZTE Corporation
    Inventor: Kelu Huang
  • Patent number: 10348638
    Abstract: Concepts and technologies are disclosed herein for creating cross-service chains of virtual network functions in a wide area network. A controller can receive a chain request from a requestor. The chain request can specify functionality that is to be included in a service chain. The functionality can include a first function and a second function. The controller can compute a route associated with the service chain. The route can specify a first site that hosts a first service that provides the first function and a second site that hosts a second service that provides the second function. A first virtual network function can be located at the first site and a second virtual network function can be located at the second site. The controller can configure edge devices and forwarding devices to various entities at the two sites to enable the cross-service virtual network function chain.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: July 9, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Abhigyan, Kaustubh Joshi, Richard Schlichting, Matti Hiltunen, Yoji Ozawa
  • Patent number: 10341411
    Abstract: Methods, systems, and computer readable media for providing message encode/decode as a service are disclosed. According to one method for providing message encoding or decoding as a service, the method occurs at an encode/decode function (EDF) node. The method includes receiving a message encode or decode operation request containing a message identifier and an operation identifier. The method also includes performing, using the operation identifier, a message encode or decode operation involving accessing or modifying at least one TLV element decoded from a message indicated by the message identifier. The method further includes sending a response indicating whether the message encode or decode operation was successfully performed.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 2, 2019
    Assignee: Oracle International Corporation
    Inventors: Syed Mohsin Reza Zaidi, Lalit Grover
  • Patent number: 10341748
    Abstract: A method and system for packet-optical in-band telemetry (POINT) that may be used in a packet-optical network is disclosed herein. An intermediate POINT device may receive a packet including at least a header and a payload at a packet layer. The POINT device may read intent information from the header, and the intent information may indicate a type of telemetry data to be collected. The POINT device may translate the intent information from the packet layer to generate a device-specific action in an optical layer to the type of telemetry data indicated by the intent. The POINT device may execute the device-specific action in the optical layer to generate a response corresponding to the intent, associate the response with the intent, and encode the response in the packet layer for downstream data forwarding.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: July 2, 2019
    Assignee: Infinera Corporation
    Inventors: Madhukar Anand, Ramesh Subrahmaniam, Sanjoy Bardhan, Radhakrishna Valiveti